Attaching a file trac.fcgi = UnicodeDecodeError

[anton@…]

Run Trac 0.12dev-r8131 under fastcgi unix socket thru nginx web-server.

When add file attachment i have an error

UnicodeDecodeError: 'utf8' codec can't decode bytes in position 164-165: invalid data

Call stack:

File "/usr/lib/python2.5/site-packages/Trac-0.12dev_r8131-py2.5.egg/trac/web/main.py", line 458, in _dispatch_request
  dispatcher.dispatch(req)
File "/usr/lib/python2.5/site-packages/Trac-0.12dev_r8131-py2.5.egg/trac/web/main.py", line 172, in dispatch
  if handler.match_request(req):
File "/usr/lib/python2.5/site-packages/Trac-0.12dev_r8131-py2.5.egg/trac/attachment.py", line 360, in match_request
  req.args['realm'] = realm
File "/usr/lib/python2.5/site-packages/Trac-0.12dev_r8131-py2.5.egg/trac/web/api.py", line 198, in __getattr__
  value = self.callbacks[name](self)
File "/usr/lib/python2.5/site-packages/Trac-0.12dev_r8131-py2.5.egg/trac/web/api.py", line 491, in _parse_args
  value = unicode(value.value, 'utf-8')

I suppose that the error is caused by missing some environment variable.

Here is my environment vars from nginx config:

            # python - wsgi specific
            fastcgi_param HTTPS off;

            ## WSGI REQUIRED VARIABLES
            # WSGI application name - trac instance prefix.
            # (Or ``fastcgi_param  SCRIPT_NAME  /some/prefix``.)
            fastcgi_param  SCRIPT_NAME        "";
            fastcgi_param  PATH_INFO          $path_info;

            ## WSGI NEEDED VARIABLES - trac warns about them
            fastcgi_param  QUERY_STRING       $query_string;
            fastcgi_param  REQUEST_METHOD     $request_method;
            fastcgi_param  SERVER_NAME        $server_name;
            fastcgi_param  SERVER_PORT        $server_port;
            fastcgi_param  SERVER_PROTOCOL    $server_protocol;

[Anton Tyutin <anton@…>]

Under apache + mod_python this trouble is missed.

[Remy Blank]

So this seems to be related to fastcgi and/or nginx. Unfortunately, none of the developers are running nginx AFAIK, so you are pretty much on your own.

Trac expects the URL and POST content to be encoded as UTF-8. This doesn't seem to be the case here. You could check if the encoding of the URL and POST content can be configured in nginx, and set it to UTF-8.

I'm closing this as an InstallationIssue. You may want to ask on the MailingList or the IrcChannel, there might be some people who are working with nginx and can help you.

[kejinlu@…]

I fix the problem with add

  fastcgi_param    CONTENT_TYPE  $content_type;
  fastcgi_param    CONTENT_LENGTH  $content_length;